Theorem scafvalg 14311

Description: The scalar multiplication operation as a function. (Contributed by Mario Carneiro, 5-Oct-2015.)

Hypotheses

Ref	Expression
scaffval.b	|- B = ( Base ` W )
scaffval.f	|- F = (Scalar ` W )
scaffval.k	|- K = ( Base ` F )
scaffval.a	|- .xb = ( .sf ` W )
scaffval.s	|- .x. = ( .s ` W )

Assertion

Ref	Expression
scafvalg	|- ( ( W e. V /\ X e. K /\ Y e. B ) -> ( X .xb Y ) = ( X .x. Y ) )

Proof of Theorem scafvalg

Dummy variables x y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		scaffval.b	. . . 4 |- B = ( Base ` W )
2		scaffval.f	. . . 4 |- F = (Scalar ` W )
3		scaffval.k	. . . 4 |- K = ( Base ` F )
4		scaffval.a	. . . 4 |- .xb = ( .sf ` W )
5		scaffval.s	. . . 4 |- .x. = ( .s ` W )
6	1, 2, 3, 4, 5	scaffvalg 14310	. . 3 |- ( W e. V -> .xb = ( x e. K , y e. B |-> ( x .x. y ) ) )
7	6	3ad2ant1 1042	. 2 |- ( ( W e. V /\ X e. K /\ Y e. B ) -> .xb = ( x e. K , y e. B |-> ( x .x. y ) ) )
8		oveq12 6022	. . 3 |- ( ( x = X /\ y = Y ) -> ( x .x. y ) = ( X .x. Y ) )
9	8	adantl 277	. 2 |- ( ( ( W e. V /\ X e. K /\ Y e. B ) /\ ( x = X /\ y = Y ) ) -> ( x .x. y ) = ( X .x. Y ) )
10		simp2 1022	. 2 |- ( ( W e. V /\ X e. K /\ Y e. B ) -> X e. K )
11		simp3 1023	. 2 |- ( ( W e. V /\ X e. K /\ Y e. B ) -> Y e. B )
12		vscaslid 13236	. . . . . 6 |- ( .s = Slot ( .s ` ndx ) /\ ( .s ` ndx ) e. NN )
13	12	slotex 13099	. . . . 5 |- ( W e. V -> ( .s ` W ) e. _V )
14	5, 13	eqeltrid 2316	. . . 4 |- ( W e. V -> .x. e. _V )
15	14	3ad2ant1 1042	. . 3 |- ( ( W e. V /\ X e. K /\ Y e. B ) -> .x. e. _V )
16		ovexg 6047	. . 3 |- ( ( X e. K /\ .x. e. _V /\ Y e. B ) -> ( X .x. Y ) e. _V )
17	10, 15, 11, 16	syl3anc 1271	. 2 |- ( ( W e. V /\ X e. K /\ Y e. B ) -> ( X .x. Y ) e. _V )
18	7, 9, 10, 11, 17	ovmpod 6144	1 |- ( ( W e. V /\ X e. K /\ Y e. B ) -> ( X .xb Y ) = ( X .x. Y ) )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 1002   = wceq 1395   e. wcel 2200   _Vcvv 2800   ` cfv 5324  (class class class)co 6013   e. cmpo 6015   Basecbs 13072  Scalarcsca 13153   .scvsca 13154   .sfcscaf 14292

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4202  ax-sep 4205  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633  ax-cnex 8113  ax-resscn 8114  ax-1re 8116  ax-addrcl 8119

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2802  df-sbc 3030  df-csb 3126  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-int 3927  df-iun 3970  df-br 4087  df-opab 4149  df-mpt 4150  df-id 4388  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-res 4735  df-ima 4736  df-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-f1 5329  df-fo 5330  df-f1o 5331  df-fv 5332  df-ov 6016  df-oprab 6017  df-mpo 6018  df-1st 6298  df-2nd 6299  df-inn 9134  df-2 9192  df-3 9193  df-4 9194  df-5 9195  df-6 9196  df-ndx 13075  df-slot 13076  df-base 13078  df-sca 13166  df-vsca 13167  df-scaf 14294

This theorem is referenced by:  lmodfopne  14330